On 01/12/2010 08:44, Changrong Ge wrote:

I am quite new to this perl language-I am from biochemistry field.
Now trying to write a script for my current work but could not make
it. The idea is to calculate the composition (percentage) of amino
acids in a protein sequence.

Input is a series of fasta format (protein sequence) output is a tab
delimited format like below: >

     Name            A      T       C        D      N     Q      E .......
     protein1     0.23   0.40  0.20 ...
     protein2     0.52   0.01   ....
     protein3
     ......
Could somebody help me with this? I tried reading some books like
perl for bioinformatics, but still not into it.

Hi Changrong

The problem doesn't seem difficult, but I'm afraid we don't have much
knowledge of bioinformatics between us. If you post a sample of input
data and the corresponding output you desire then I am sure we can help.

Regards,

Rob

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